Design and Analysis of a secure multi-party communication protocol

In the past years digital communication became an important aspect in every day life. Everything is shared and discussed in groups of friends, family or business part- ners without a proper way to protect that information. This master thesis introduces the first secure robust multi-party communication protocol which mimics a physical conversation with the help of a Diffie-Hellman key tree and social behaviours. Robust- ness against offline group members is reached by taking advantage of transitive trust between people and the ability to decline new members through an implicit protest. After introducing and analysing this new protocol, an improved version, which fixes the found issues, is presented.

<rdf:RDF
xmlns:dcterms="http://purl.org/dc/terms/"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:bibo="http://purl.org/ontology/bibo/"
xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
xmlns:foaf="http://xmlns.com/foaf/0.1/"
xmlns:void="http://rdfs.org/ns/void#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#" >
<rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/40166">
<dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/36"/>
<dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/36"/>
<dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/40166/3/Herberth_0-425387.pdf"/>
<dc:creator>Herberth, Klaus</dc:creator>
<dc:contributor>Herberth, Klaus</dc:contributor>
<dcterms:issued>2016</dcterms:issued>
<void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
<bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/40166"/>
<dc:rights>terms-of-use</dc:rights>
<foaf:homepage rdf:resource="http://localhost:8080/jspui"/>
<dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-09-27T08:49:48Z</dcterms:available>
<dc:language>eng</dc:language>
<dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-09-27T08:49:48Z</dc:date>
<dcterms:title>Design and Analysis of a secure multi-party communication protocol</dcterms:title>
<dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/40166/3/Herberth_0-425387.pdf"/>
<dcterms:abstract xml:lang="eng">In the past years digital communication became an important aspect in every day life. Everything is shared and discussed in groups of friends, family or business part- ners without a proper way to protect that information. This master thesis introduces the first secure robust multi-party communication protocol which mimics a physical conversation with the help of a Diffie-Hellman key tree and social behaviours. Robust- ness against offline group members is reached by taking advantage of transitive trust between people and the ability to decline new members through an implicit protest. After introducing and analysing this new protocol, an improved version, which fixes the found issues, is presented.</dcterms:abstract>
<dcterms:rights rdf:resource="https://kops.uni-konstanz.de/page/termsofuse"/>
</rdf:Description>
</rdf:RDF>